Modular Nintendo 3DS Game Card Case

A modular 3DS cartridge case. Each compartment holds 6 games. I know that they can be combined up to 4, and 5 shouldn't be an issue either.
Look at the picture as a reference when deciding how many of each part you need.

I have since made a much simpler, far more effective 3DS game card case. It can be found here: https://www.thingiverse.com/thing:2668901